pyas 1.2.4

Run machine code, assembly and webassembly directly in Python

pyas

Run machine code, assembly and webassembly directly in Python.

Have you ever realized you can't remember how to add numbers in Python but you do remember how to do it in assembly?

If the answer is yes this is the package for you, using pyas you will be able to run machine code, assembly and webassembly directly from within Python!

- currently this only supports Linux

Installation

From PyPI

pip3 install pyas

From GitHub

pip3 install git+https://github.com/donno2048/pyas

Usage / Example

Machine code

Comments are noted with ;, # and //

from pyas import function
add_one = function(
    '8b c7'  # mov eax, edi
    '83 c0 01'  # add eax, 1
    'c3'  # ret
)
return_same = function(
    '''
    8b c7  # mov eax, edi
    c3  // ret
    '''
)

print(add_one(10), "=", return_same(10), "+ 1")
# output: 11 = 10 + 1

add_numbers = lambda i, val: function(
    '''
    8b c7  ; mov eax, edi
    83 c0 %.2x # add eax, i
    c3  // ret
    '''
    %i,
    val # every value after the first argument will be passed directly to the function if supplied
)

print(add_numbers(4, 10), "=", "10 + 4")
# output: 14 = 10 + 4

Assembly

from pyas import function
add_one = function(
    '''
    mov eax, edi
    add eax, 1
    ret
    ''',
    raw = False
)
return_same = function(
    '''
    mov eax, edi
    ret
    ''',
    raw = False
)

print(add_one(10), "=", return_same(10), "+ 1")
# output: 11 = 10 + 1

add_numbers = lambda i, val: function(
    '''
    mov eax, edi
    add eax, %d
    ret
    '''
    %i,
    val, # every value after the first argument will be passed directly to the function if supplied
    raw = False
)

print(add_numbers(4, 10), "=", "10 + 4")
# output: 14 = 10 + 4

WebAssembly

pyas will automatically recognize running in a web browser and will run Webassembly, but you'll have to specify a func_name.

from pyas import function
add_one = function(
    '\0asm\1\0\0\0\1\6\1`\1'
    '\x7f\1\x7f\3\2\1\0\7'
    '\x0b\1\7add_one\0\0\n\t'
    '\1\7\0\x20\0A\x01j\x0b'
    , func_name = 'add_one')
print(f"{add_one(10)} = {add_one(9)} + 1")

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